片语
step-by step language concept语言概念递进
stepwisead 逐步地;阶梯式地
graduallyad 逐步地;渐渐地
step-by step antomatic telephone system步进式自动电话制
step-by step method逐步逼近法
step step by step英语
step p by step逐步地
stage by stagead 逐步地,一步一步地;分阶段地
step by step exchange步进式电话交换局
step-by step examination排查法
step by step switch步进开关